Where are you planning to apply this? I think it's great in walls, but in attics it's creating a major issue down the road. On roof deck application water and moisture will be trapped on top of roof structure and will not show up till major rot has occurred. In a traditional attic, moisture will be allowed to vacate the structure. By sealing with foam I feel a structure will become to airtight.

As said elsewhere, what do you have in mind?
Health & Safety is a big issue when using two part foam indoors.
It can effect your eyes and lungs.....you must have lots of ventilation, even then you will probably feel ill next day.